*{padding:0;margin:0;}
#content{height:100%;float:left;width:100%;}
#content>p{height:100%;float:left;margin:0;width:100%;line-height:500px;text-align:center;}
#content>.bg{background:#eee;height:100%;float:left;width:100%;position:relative;}
#content .nav{height:40px;line-height:40px;margin:0 15px;border-bottom:1px solid #aaa;}
#content .nav>span{float:left;height:40px;line-height:40px;}
#content .nav>a{float:right;height:40px;line-height:40px;}
#content>.bg>p{color:#aaa;margin-left:15px;line-height:40px;height:40px;}
#content form label{text-align:right;}
#content form>div{margin:15px 0;}
#content form>input{position:absolute;bottom:40px;left:50%;margin-left:-36px;}